Nanako, who belongs to the volleyball club of the University of Physical Education, is secretly aiming to become a member of the Olympic team.However, she has her innate perverted libido tendencies, and was indulged in her elderly mania and daily masochistic sexual training play.Even during her training, her burning masochistic libido could not be suppressed, and she drowned in intense lewd delusions and welcomed acme.Nanako's outstanding physical strength and motor nerves did not go to her volleyball, and she seized every opportunity and fell into a world of extreme violent delusions...